User's Manual

3–13
PacketMax 100/300 User Manual, 10007306, Rev J
Chapter 3. Aperto Installation Manager
 Incorrect WSS port number entered — Verify that the SS is in the correct sector
and that the correct port number is being used.
 Cable problems — Ensure that the signal and control cables between the Inter-
face Box and the Outdoor Unit are properly and securely connected; that
cables meet the requirements given in this manual; and that cables do not
exceed 100 m (330 ft) in length if Cat 5E, or 50 m (165 ft) if Cat 5. (Typically,
the AIM will have hung at the “searching for sync” or “link establishment” state.)
 Incorrect antenna alignment — Try re-running the AIM and aligning the antenna
again, making sure to secure the Outdoor Unit in the position where the stron
-
gest signal is being received. (Typically, the AIM will have hung at the “search-
ing for sync” or “link establishment” state.)
 BS wireless failure — Confirm that the BS’s wireless interface to the SS is oper-
ating correctly. (Typically, the AIM will have hung at the “searching for sync” or
“link establishment” state.)
 DHCP failure — If the Installation Manager hangs in the “DHCP request sent”
state, the communication link has been successfully established but there has
been a problem with DHCP or configuration downloading. Ensure that:
- The DHCP server has a proper entry for the SS’s MAC address.
- The DHCP server has an established route to the SS.
- The TFTP server has a valid configuration file for the SS.
 Noisy or bad communication link — If the throughput test is inordinately slow,
the communication link’s error rate may make it inappropriate to put the SS into
service. Experience has shown that the test can take up to ten minutes and still
be completed without errors. If the throughput rate is not appropriate, try align
-
ing the antenna in its current location or relocating the antenna. If this does not
solve the problem, perhaps the sensitivity of the antenna at the base station
should be adjusted (depending on performance of other SUs in the sector).
 Signal too strong — If the base station antenna is adjusted for communication
with distant SSs, an SS near the base station may not be able to turn its trans
-
mit power low enough to avoid overdriving its signal to the base station. (Typi-
cally, the AIM will have hung at the “searching for sync” or “link establishment”
state.) If this occurs, align the subscriber antenna for the maximum signal; then
adjust the antenna alignment upward (“detuning” the antenna to decrease
transmit power) until the transmit signal strength is appropriate for the base sta
-
tion antenna.
NOTE: Please be sure to have the correct frequency, BS ID, sector number,
and channel width when running AIM. Without these correct entries, the unit
will not be able to synchronize with the Base Station and you will not be able
to align the antenna. The lack of signal will appear the same as a non-cov
-
ered area. Either use a “Have Disk” file generated by the Configuration Man-
ager or use the correct WSS number.
3.6 Buzzer in AIM
The buzzer beeps (if enabled) at the time of Antenna Pointing and is based on RSSI
and CINR. The better the CINR, louder the beeps. The better the RSSI, faster the
beeps (lesser delay between beeps). The longest delay between beeps is “1second”
and the least delay is “no delay at all”.